Celso Amorium, foreign minister of Brazil
Philip J. Crowley, assistant secretary of state
Danielle Pletka, vice president for foreign and defense policy studies, American Enterprise Institute
The U.N. Security Council imposed new sanctions on Iran after months of diplomatic negotiations over the future of its nuclear program. Iran's president Mahmoud Ahmadinejad dismissed the sanctions. Critics are split. Some call for harsher penalties on Iran, others say sanctions undermine diplomacy.